A leading commercial HVAC company serving Washington DC, Virginia, and Maryland.

Thornton Service provides commercial HVAC services to clients throughout the Washington metropolitan area. Our skilled HVAC technicians specialize in preventive maintenance and repair of commercial heating and cooling systems. From emergency repair to maintenance-only HVAC contracts and facilities management, we support a range of industries, including healthcare, education, government and mission critical data centers.

Thornton Service - A Leader in HVAC Systems and Solutions for Washington D.C.

Thornton Service is a privately held commercial HVAC services company serving building owners and operators across the greater Washington D.C. metro area and surrounding counties in Virginia and Maryland. Established in 1994, but with roots reaching back to 1982, we have partnered with clients across our nation’s capital to deliver reliable mechanical services and improve efficiencies for over 35 years.

As a member of the Service Logic family of companies, we have even an in depth support system and breadth of experience to draw on as we continue to expand services for new and existing clients alike.

Focused on Energy Efficiency

Everything we do is tied to the core goal of helping commercial building owners control operating costs while improving HVAC system performance for their facilities. From operational assessments to planned maintenance andenergy optimization programs, our team is always looking for ways to make sure your building is operating at its best.

Client Support

Every Thornton Service client, regardless of size, receives the same high level of professionalism for the HVAC systems and solutions we provide. While we’ve certainly expanded through the years and plan to continue strategic growth through our affiliation with Service Logic, we realize our success is based on a commitment to long-term, mutually beneficial relationships with our clients.

Our portfolio includes healthcare, financial, religious, airports, labs, and mission critical data centers throughout Washington D.C. Clients depend on our HVAC services for both full service and preventive, maintenance-only HVAC contracts to owner-occupied and managed buildings.

Team Driven

Our team of engineers, technicians and sales professionals are among the most talented and customer-focused in the industry. In fact, our HVAC technicians are so trusted that 90% of our business comes from long-term service customers who depend on Thornton Service to:

reduce energy costs

extend equipment life

reduce the risk of equipment downtime

prevent expensive repairs

The entire team is continually trained on the latest developments in brand-specific equipment, technical advancements, and energy-efficient best practices, through our industry-leading education program. While many of our employees have been with the organization for years, we are constantly sourcing the best and brightest talent available.

Technologically Advanced

Providing our clients with best-in-class services requires a commitment to best-in-class business systems. Thornton Service’s enterprise platform includes a state-of-the-art service center providing customized tracking and tasking, VoIP Data, Accounting and CRM tools. We also have the latest in engineering, estimating, energy modeling and project management tools. These resources, coupled with our quality team of experts with domain knowledge and experience, ensure consistent results.

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How to Save Money With Energy Efficient Systems

We know the path to energy sustainability is a journey not an event. We partner with each client to analyze their utility bills, identify no-cost/low-cost savings opportunities, implement operations and maintenance practices and identify system upgrades and retrofits with a return on investment.